exclude unnecessary files in package

Cargo.toml

@@ -7,6 +7,11 @@ description = "Astronomy utils"
 repository = "https://github.com/eta077/astro-rs"
 readme = "README.md"
 
+exclude = [
+    ".github",
+    "tests" 
+]
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]

tests/integration.rs

@@ -7,7 +7,7 @@ use astro_rs::fits::HduList;
 #[test]
 fn test_hdu_list_from_bytes() -> Result<(), Box<dyn Error>> {
     {
-        let fits_file = File::open("assets/eagle_nebula/502nmos.fits")?;
+        let fits_file = File::open("tests/assets/eagle_nebula/502nmos.fits")?;
         let mut fits_file_reader = BufReader::new(fits_file);
         let mut fits_bytes = Vec::new();
         fits_file_reader.read_to_end(&mut fits_bytes)?;
@@ -17,7 +17,7 @@ fn test_hdu_list_from_bytes() -> Result<(), Box<dyn Error>> {
     }
 
     {
-        let fits_file = File::open("assets/M17/502nmos.fits")?;
+        let fits_file = File::open("tests/assets/M17/502nmos.fits")?;
         let mut fits_file_reader = BufReader::new(fits_file);
         let mut fits_bytes = Vec::new();
         fits_file_reader.read_to_end(&mut fits_bytes)?;